Transposing mechanism for accordions and the like.



GALLEAZZI. TRANSPOSING mommsm FOR AGGORDIONS AND THE LIKE. APPLIGATIONFILED AUG. 20, 1913.

1,129,199. Patented Feb. 23, 1915.

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Patented. Feb. 23, 1915.

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J. GALLEAZZI. TRANSPOSING MECHANISM FOR AGGORDIONS AND THE LIKE.

' APPLICATION FILED AUG. 20, 1913.

1,1 29, 1 90. Patented Feb. 23, 1915.

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THE NORRIS PETERS ca, FIjO'IU-LITHOU WASHING run. D. L

UNITED STATES PATENT OFFICE.

JOSEPH GALLEAZZI, OF SAN FRANCISCO, CALIFORNIA.

TRANSPOSING MECHANISM FOR ACCORDIONS AND THE LIKE.

Application filed August 20, 1913.

To all whom it may concern:

Be it known that I, JOSEPH GALLEAZZI, a citizen of the United States,residing at San Francisco, in the county of San Francisco and State ofCalifornia, have invented new and useful Improvements in TransposingMechanisms for Accordions and the like, of which the following is aspecification.

The object of the present invention is to provide a simple andconvenient transposing mechanism for accordions and the like.

In the accompanying drawings, Figure 1 is a broken front view of myimproved mechanism; Fig. 2 is a horizontal section thereof on the line2-2 of Fig. 1, Fig. 3 is a vertical section of the line 3-3 of Fig. 2,certain parts being omitted for clearness of illustration; Fig. 4: is ahorizontal section on the line H of Fig. 3.

Referring to the drawing, 1 indicates the body of an accordion, in whichare pivoted, as shown on 2, the finger keys 3, rear portions 4 of whichare adapted to actuate slide rods 5, the rear ends of which can slide inbearings in a vertical plate 6 secured to the under side of a soundingboard 7 On said slide rods are secured disks 8, which, when the sliderods are moved rearwardly by the operation of the keys, engage arms 9 oflevers 11, pivoted at 12 on the under side of the sounding board, saidlevers being normally pressed upward by springs 10, secured, as shown on13, to the sounding board, and said levers carrying valves 14:, whichnormally close holes 16 in said sounding board. On the upper side ofsaid sounding board are secured, by screws 17, the bases 18 of hollow ortubular posts or bearing 19, of which there is one for each octave ofthe key-board. Rotatable in each bearing is a shaft 21, having a collar22 secured thereto resting upon the top of said bearing, said shaftcarrying at the top a disk or plate 23, formed with radially extendingarms 24, which are secured, by screws 26, to a fiat ring 27, cemented tothe upper edge of a cylindrical reed-carrier 28, and serving to closethe upper ends of reed chambers 29 in said carrier. In each reedcarrierthere are twenty-four such chambers corresponding to the notes of twooctaves. The chambers open at the outer side of the carrier, and againstsaid openings are placed reeds 31, these reeds being adaptedrespectively to produce the notes of one full octave, the six notes nextabove the octave and Specification of Letters Patent.

Patented Feb. 23, 1915.

Serial No. 785,700.

the six notes neXt below the octave. The holes 16 in the sounding boardare twelve in number, corresponding to the notes of an octave, and arearranged in a semi-circle about the aXis of the shaft 21 as center andon the side next the key board, so that, by the rotation of thereed-carrier, holes in the bottoms of the reed chambers can allsuccessively register with the holes 16 in the sounding board. Rigidlyconnected with each disk 23 and coaxially above it is a pinion 32, andall of said pinions mesh with a rack 33, so that, by the longitudinalmovement of said rack, all of said pinions, and

consequently all of said reed-carriers, are

rotated in unison.

In the normal position of the reed-carrier, the reeds that are not inuse, that is, on the rear side of the reed-carrier, are, on the left,from B, below the C of the octave, descending to F#, and, on the right,from C, above the B of the octave, ascending to F, so that, in eachreed-carrier, the reed producing the highest note is that of F above theoctave and the reed producing the lowest note is that of Fzfi: below theoctave. If the player wishes to transpose to a semitone higher, he movesthe rack a sufiicient distance to turn the pinions in a clock-wisedirection, so that the reed producing Ci, is now the lowest reed in usein each reed-carrier, and the reed producing C is the highest reed inuse in each reed-carrier. By a similar, but extended, operation, themusic can be transposed to any key desired above the normal key of C,and by reversing the operation, that is, moving the rack to the left, toany key below the normal key.

1. In transposing mechanism, the combination of finger keys, individualvalves therefor, a sounding board having holes ar ranged to be closed bysaid valves, rotary cylindrical reed-carriers, reeds carried thereby,said carriers being arranged to move said reeds into operative relationto said holes, and means for rotating all of said carriers in unison.

2. In transposing mechanism, the combination of finger keys, a soundingboard, having holes arranged in arcs of circles, one are for each octaveof the keys, valves normally closing said holes and individuallyoperated by said keys, rotary reed-carriers, reeds carried thereby intooperative relation to the holes of the several arcs, pinions on saidreed-carriers, and a rack for rotating said to operative relation to theseveralholes in the corresponding arc, reeds for the several chambers,pinions secured to said reed-car- 1 riers, and a rack arranged to rotateall of said pinions.

In testimony whereof I have hereunto set my hand in the presence of tWosubscribing Witnesses.

JOSEPH GALLEAZZI. Witnesses:

FRANCIS M. WRIGHT, D. B. RICHARDS.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of latents.

Washington, D. G.

